"David Hansen" wrote in message
...
On 15 Mar 2006 23:56:36 -0800 someone who may be "Alan"
wrote this:-

Double glazing prevents relatively little heat loss, unless it
replaces badly fitted windows. However, double glazing has other
advantages.

Eh? Think you've got your wires crossed there,

No.

a single pane of glass
offers near enough no thermal insulation. A standard 28mm air gap
coupled with K-glass makes a huge difference

You miss the point. Windows are a small part of where heat is lost
through conduction.

Well insulated windows reduce cold spots.